package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOPeration{
    @Override
    public void work(BookList bookList) {

        System.out.println("请输入你要删除书的名字:");
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine();
        int currentSize = bookList.getUsedSize();
        int i = 0, pos = 0;
        for(; i < currentSize; i++){
            Book book = bookList.getBooks(i);
            if(book.getName().equals(name)){
                pos = i;
                break;
            }
        }
        if(i >= currentSize){
            System.out.println("没有找到你要删除的书");
            return ;
        }
        for(int j = pos;j < currentSize; j++){
            Book book = bookList.getBooks(j+1);
            bookList.setBooks(book,j);
        }
        bookList.setUsedSize(currentSize - 1);
        bookList.setBooks(null, currentSize - 1);
        System.out.println("删除成功");
    }
}
